Im going to just try and get a replacement. What's weird is that at 80 percent the bass is not even close to how it use to be but it sounds like how it should sound with the pin hole block. Mid bass reduction with stronger sub bass and the bass as a whole more controlled and the mids are better also. I enjoy the sound change but just find the volume thing strange idk what would cause this
Is it only the (entire) bass spectrum and mids (except upper mids) that are effected? Because your pin hole might be blocked (you don't have to see the blockage for it to be there). It inevitably get's blocked with your ear wax. If the highs aren't effected (or sound louder), then I would have to say your pinhole got blocked (it'll happen with your new pair as well), the drivers aren't malfunctioning.